Apparatus for drying bricks, &amp; c.



.PATBNrhu AUG. 11, 1903..

a 0. BERHENKE.

APPARATUS FOR DRYING BRICKS, &o.

APPLICATION FILED NOV. 6, 1901.

2 SHEETS-SHEET 1.

N0 MODEL.

No. 736,060. PATENTED AUG. 11, 1903.

-' 0. BERHENKE.

APPARATUS FOR DRYING BRICKS, &0.

APPLICATION FILED NOV. 6, 1901.

2 SHEETS-SHEET 2.

N0 MODEL.

UNITED STATES Patented August 1 1, 1903.

PATENT OFFICE.

CARL BERIIENKE, OF BILLERBEO-K, GERMANY.

APPARATUS FOR DRYING BRICKS, 80G.

SPECIFICATION forming part of Letters Patent No. 736,060, dated August11, 1903.

Application filed November 6, 1901. Serial No. 81.358. (No model.)

To all whom it may concern:

Beit known that I, CARL BERHENKE, a subject of the Prince of Lippe,residingat Billerbeck, Lippe, Germany, have invented certain new anduseful Improvements in Drying Apparatus for Bricks,'Tiles, and the Like,of which the following is a specification.

My invention relates to improvements in means for the drying of bricks,tiles, and other ceramic ware. The essentially new and characteristicfeature lies in place of using a special direct heating source for thedryingchamber in drying the bricks or the like piled up in the latter bythe warmth contained in the waste gases from a kiln. The moisture herebydrawn off from the ware in drying as also the Waste gases may then beled away to the furnace-chimney. The otherwise lost warmth of the wastegases which serve the purpose of drying is under my invention rationallyemployed with the same special heating of the drying-chamber, whichformerly required a special heating source for this alone or steam-pipesfrom a steam-supply station.

In carrying out my invention I lay in some known way through the usualdrying-chamber a system of pipes, which latter is connected to the exitfor the hot combustiongases rising from the kiln and which led throughthe pipes impart their heat to the piled-up bricks or other ware to bedried. The water-vapors arising are led off through openings distributedover the roof of the dry:

ing-chamber and which are connected with channels conducting the gasesto a chimney.

In the accompanying drawings, which illustrate my invention, Figure 1 isa longitudinal sectional elevation of the brick-drying plant; Fig. 2, aplan, partly in horizontal section, on the line A B of Fig. 1. Fig. 3shows a trans verse section, and Fig. 4 shows in a ground plan, therelative positions of the kiln and the plant. Fig. 5 is a diagrammaticend view of the apparatus.

A large number of pipecoils c are led through the drying-chamber d,which is itself of a known form. These coils terminate at one end in aduct a, connected with the top of the kiln 0, and at the other end in achannel 19, leading to the chimney '11. The chimney t' is connected witha duct a before entrance of the latter to the drying-chamber by means ofa branch channel is, which latter can be Wholly or partially shut bymeans of a damper is or other device in order to regulate the quantityof the gases passing through the pipe-coils 0, according to requirement.Several rows of apertures e are formed in the roof, terminating inchannels f, which run transversely of the drying-chain her and diswiththe chimney h.

In carrying out my invention the operation is as follows: The hotcombustiorrgases pass through the channel a, to the dilferent coils ofpipes, then through all these and through the channel I) to the chimneyt'. The heat radiated from the pipes v'aporizes the water contained inthe tiles in process of being dried, and the vapors pass through theopenings 6 and connecting-channels f and g to the chimney h. Should onlya portion of the gases be used for heating or the process be stopped,the passage for the combustion-gases through the branch channel It iswholly or partially opened.

The various pipes 0 may be led parallel to one another longitudinallythroughout the drying-chamber d, as is shown in the drawings. They aresupported at suitable intervals by column-shaped frames or, which at thesame time support the roof of the chamber. The pipe-coils c consist,preferably, of long tubes, between which short pieces n and bentconnecting-pieces are coupled by means of flanged joints to enable readycleaning of 'essary. Throughout the chamber rails 4 run between thepipes, as already known, in order to carry in the bricks to be dried insmall trucks and in the same way to remove them after drying.

The improvements in the drying of bricks herein described present thefollowing advantages: A separate heating source for the drying-channelsis not required, efiecting the saving of a very considerable sum,depending, naturally, on the price of coal, but always considerable. Asaving of work is also obtained, because the bricks can be led in on thetrucks and after drying can be removed directly to the kilns. Under myinvention where hot gases are employed direct a higher economiccoefficient is obtained than in those charge into a longitudinal canalg, connected soot adhering to the pipes and removal, if necdrying plantswhere steam is the drying agent.

My apparatus differs in principle from others in which waste heat fromcooling ofi kilns is carried to the drying-rooms by direct circulationof air. In my apparatus I employ the gases from the kiln which areusually discharged into the chimney. By conducting these waste gasesthrough a drying-channel and radiating-pipes by which heat is suppliedto the drying-chambers and then discharging them into the chimney I amenabled with the greatest efficiency and economy to make the one chimneyserve for the kiln and the drying apparatus While maintaining the veryunequal degree of heat in the two and dispense with the necessity ofdirect firing or steam-heating or other special source of heat commonlyemployed in drying apparatus. The simplicity of the apparatus reducescost of attendance, and I furthermore provide effective means forgraduating and regulating the heat in the driers and also for carryingoff discharged vapor.

The following is what I claim as new and desire to secure by LettersPatent:

1. Adrying apparatuscomprisingadryingchamber, having a roof providedwith apertures, transverse channels, located over the apertures, alongitudinal canal with which the channels connect, a chimney with whichthe canal connects, a kiln, a kiln-chimney located between thedrying-chamber and the kiln, an inlet-duct conveying the products ofcombustion from the top of the kiln to the base of the drying-chamber,an outlet-channel conveying the products of combustion from the base ofthe drying-chamber to the kiln-chimney, and pipe-coils located in thedrying-chamber having one end connected with the inlet-duct and theother end connected with the outlet-channel.

2. A drying apparatus comprising a drying chamber, having a roofprovided with apertures, transverse channels, located over theapertures, a longitudinal canal with which the channels connect, achimney with which the canal connects a kiln, a kiln-chimney locatedbetween the drying-chamber and the kiln, an inlet-duct conveying theproducts of combustion from the top of the kiln to the base of thedrying-chamber, having a branch provided with a damper and connectedwith the kiln-chimney, an outlet-channel conveying the products ofcombustion from the base of the drying-chamber to the kiln-chimney, andpipe-coils located in the drying-chamber having one end connected withthe inlet-duct and the other end connected with the outletchannel.

In testimony whereof I have hereunto set my hand in the presence of twowitnesses.

CARL BERHENKE.

Witnesses:

CARL SOHMITT, CHARLES LESIMPLE.

